问题
解答题
计算: (1)(-
(2)(-3)4÷(2
(3)(
(4)1
|
答案
(1)原式=(-
)×9×(-1)1 27
=
;1 3
(2)原式=81÷
+81 16
×(-21 2
)1 3
=81×
-16 81 7 2
=16-7 2
=
;25 2
(3)原式=
×36-1 9
×36-1 6
×361 18
=4-6-2
=-4;
(4)原式=
×(-7 6
)×(-3 2
)×5 4 6 5
=
.27 8